US3006910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic polymerization of monoolefins
Assignee: Millennium Petrochemicals Inc
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Filing: 1958-08-15
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Granted: 1961-10-31
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Expires: 1978-08-15
Abstract
No abstract record available.
Inventors
- 👤 Ervin G Pritchett
- 👤 James R Gibbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:09
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
IN A CATALYTIC PROCESS FOR POLYMERIZING A MONOOLEFINIC ALIPHATIC HYDROCARBON OF TWO TO SIX CARBON ATOMS TO A NORMALLY SOLID POLYMER IN AN INERT LIQUID HYDROCARBON REACTION MEDIUM USING AS THE POLYMERIZATION CATALYST A COMBINATION OF (1) A TIN HYDROCARBON AND (2) A GROUP IVB METAL TETRAHALIDE, THE IMPROVEMENT WHICH COMPRISES ADDING WATER TO THE REACTION MIXTURE, THE TOTAL AMOUNT OF ADDED WATER BEING IN THE RANGE OF FROM ABOUT 2 TO ABOUT 200 MILLIMOLES PER MOLE OF THE TIN HYDROCARBON COMPONENT OF THE CATALYST, SAID CATALYST BEING CHARACTERIZED BY CONTAINING, IN MOLE RATIO, FROM ABOUT 0.5 TO ABOUT TWO MOLES OF THE TIN HYDROCARBON PER MOLE OF THE GROUP IVB METAL TETRAHALIDE AND USED FOR SAID POLYMERIZATION IN AN AMOUNT OF FROM ABOUT 0.01 TO ABOUT ONE PERCENT BASED ON THE WEIGHT OF THE MONOOLEFINIC ALIPHATIC HYDROCARBON SUBJECTED TO POLYMERIZATION.
Claim 2
Dependent Claim
141 words
IN A CATALYTIC PROCESS FOR POLYMERIZING A MONOOLEFINIC ALIPHATIC HYDROCARBON OF TWO TO SIX CARBON ATOMS TO A NORMALLY SOLID POLYMER IN AN INERT LIQUID HYDROCARBON REACTION MEDIUM USING AS THE POLYMERIZATION CATALYST A COMBINATION OF (1) A TIN HYDROCARBON AND (2) A GROUP IVB METAL TETRAHALIDE, THE IMPROVEMENT WHICH COMPRISES ADDING WATER TO THE REACTION MIXTURE, THE TOTAL AMOUNT OF ADDED WATER BEING IN THE RANGE OF FROM ABOUT 2 TO ABOUT 200 MILLIMOLES PER MOLE OF THE TIN HYDROCARBON COMPONENT OF THE CATALYST, SAID CATALYST BEING CHARACTERIZED BY CONTAINING, IN MOLE RATIO, FROM ABOUT 0.5 TO ABOUT TWO MOLES OF THE TIN HYDROCARBON PER MOLE OF THE GROUP IVB METAL TETRAHALIDE AND USED FOR SAID POLYMERIZATION IN AN AMOUNT OF FROM ABOUT 0.01 TO ABOUT ONE PERCENT BASED ON THE WEIGHT OF THE MONOOLEFINIC ALIPHATIC HYDROCARBON SUBJECTED TO POLYMERIZATION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-30 | 1965-05-01 | 1965-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-30 | 1969-05-01 | 1969-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-30 | 1973-05-01 | 1973-10-31 | $7700.00 | Window Closed / Lapsed |